DPR file), while the forms (windows) are described in files with the DFM extension, ie. Here's a skeleton of a unit: Open a DOS box, compile the program with "dcc32console", and run the compiled as with "console.exe".
In the empty form that shows up when starting Delphi, add a label and a pushbutton, double-click on the button, and add the following code to the Button1Click() routine: Hit F9 to run the application, and click on the pushbutton to see the text of the label change.
That's the reason why some components are distributed as source code that you must compile yourself into a package before adding it to the IDE.
The alternative for commercial components is to generate multiple versions of the package, one for each version of the IDE that they wish to support.
Finally, if resource files are used (RES or DCR), Delphi will need those to compile a package successfully. DCU) aren't needed to use a component; They are only needed if you want to compile the component yourself.
Bitmaps for the components that will appear in the palette are saved in the DCR files. Important: As DCUs are version-dependent, a package can only be installed in the same version of the IDE that was used to compile it.
Net framework were designed by the same person, Anders Hejlsberg. In October 2006, Borland relaunched its Turbo brand, and offers two versions: Explorer, which are free but doesn't allow installing third-party components, and Professional, which aren't. Borland Developer Studio) with just the Delphi for Windows32 personality.arrays (either static or dynamic) passed as parameters to a routine.Dynamic arrays are really a one-dimensional array that holds pointers to other arrays, and each cell can point to arrays of different dimensions: As a result, Delphi cannot provide Visual Basic's UBound(My Array,x) where x is either 1, 2, or 3, and High(My Array) returns the upper bound of the array.Once installed, packages are listed in the Registry under HKEY_CURRENT_USER\Software\Borland\Delphi\ Components meant to be used in the IDE can only be installed as a package, ie.a DPK master file along with one or more PAS files to be compiled into DCUs and aggregated in a single BPL file that will be registered into the IDE.